I often have need to manipulate data formated as comma separated
fields with each line being a separate data record. Sometimes I
want to delete a field from the file. Say I want to delete the
7th item. Currently, I do this in several steps,
search for ^(.+?,){6} and replace with &b
search for ^(.+?,){7} and replace with &b
search for b.+b and replace with nothing
The first two steps simply surround the field I want to delete
with a character not found in the file. This makes it trivial to
delete the field I want deleted.
I am would like to know if there is a more efficient (fewer
steps) way to achieve this with grep.
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